little-W | Studying gulls:
Black-headed Gull with dark bill and legs
little-W | Studying gulls:
Black-headed Gull, gray hind-neck
little-W | Studying gulls:
Black-headed Gull, gray hind-neck
little-W | Studying gulls:
Black-headed Gull, gray hind-neck
little-W | Studying gulls:
Black-headed Gull, gray hind-neck
little-W | Studying gulls:
Black-headed Gull, gray hind-neck
little-W | Studying gulls:
Black-headed Gull, gray neck and head
little-W | Studying gulls:
Black-headed Gull, gray neck and throat
little-W | Studying gulls:
Black-headed Gull, gray neck and throat
little-W | Studying gulls:
Black-headed Gull, 2cy, black spots on tertials
little-W | Studying gulls:
Black-headed Gull, 3cy, W[E8YX], black spots on wings
little-W | Studying gulls:
Black-headed Gull, adult, early head moult
little-W | Studying gulls:
Black-headed Gull, adult
little-W | Studying gulls:
Black-headed Gull, adult
little-W | Studying gulls:
Black-headed Gull, adult
little-W | Studying gulls:
Black-headed Gull, adult, W[E5RE]